Update module github.com/spf13/cobra to v1.2.1 (#3072)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

go.mod

@@ -41,7 +41,7 @@ require (
 	github.com/sideshow/apns2 v0.20.0
 	github.com/sirupsen/logrus v1.8.1
 	github.com/spf13/afero v1.6.0
-	github.com/spf13/cobra v1.1.3
+	github.com/spf13/cobra v1.2.1
 	github.com/spf13/viper v1.8.1
 	github.com/stretchr/testify v1.7.0
 	github.com/ugorji/go/codec v1.2.6